* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  .tabs {
    width: 600px;
    height: 400px;
    margin: 50px auto;
    position: relative;
  }
  .tabs ul {
    list-style: none;
    overflow: hidden;
  }
  .tabs ul li {
    float: left;
    text-align: center;
    width: 100px;
    border: 1px solid black;
    padding: 10px;
    margin: 15px;
    border-radius: 5px;
    cursor: pointer;
  }
  .tabs ul li:active {
    background-color: greenyellow;
  }
  .tabs ul li a {
    text-decoration: none;
    color: black;
    user-select: none;
  }
  .tabs ul li.actived {
    background-color: yellow;
  }
  .tabs div {
    width: 600px;
    height: 357px;
    border: 1px solid #ccc;
    position: absolute;
    padding: 50px;
    border-radius: 10px;
    display: none;
  }
  .tabs div.show {
    display: block;
  }
  